MESON Chess Problem Database

Problem Display
PID: 15206 (K7/7B/8/8/8/1Q6/7p/kn5r w - - 0 1)

Muller, Dieter

Deutsche Schachzeitung, 1981

K7/7B/8/8/8/1Q6/7p/kn5r

#2

3 + 4

3295 Einfuhrung in die Welt des Schachproblem 1984

SOLUTION

  • SOUND
  • Sets
    • 1...Sd2
      • 2.Qa3#
    • 1...Sa3
      • 2.Qxa3#
  • Tries
    • 1.Qa4+?
      • 1...Sa3
        • 2.Qxa3#
      • 1...Kb2!
    • 1.Qc3+?
      • 1...Ka2
        • 2.Bg8#
      • 1...Sxc3!
  • Keys
    • 1.Bxb1!
      • threat
        • 2.Qa2#
      • 1...Rxb1
        • 2.Qa3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • S(b);N_GUARD::QAR2(A)
    • S(b);N_GUARD::QAR2(A),XS(b)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::QAR2(A),XS(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);P-FLIGHT::B(B)
      • Refutation
        • S(b);XQ(A)
  • Actual
    • B(B);XS(b)
    • Threat
      • QAR1(A)
    • Vars
      • R(c);SBLOCK,XB(B)::QAR2(A)
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